Speaking multiple languages may help to prevent dementia

We now know keeping your brain active can help prevent dementia. There is now new evidence showing that speaking more than one language may actually help to delay dementia. NBC Latino Dr. Joseph Sirven shares information about how being bilingual can delay or prevent the onset of dementia.

Dr. Joseph Sirven is a first-generation Cuban-American. He is Professor and Chairman of the Department of Neurology and was past Director of Education for Mayo Clinic Arizona. He is editor-in-chief of epilepsy.com and has served U.S. and global governmental agencies including the Institute of Medicine, NASA, FAA, NIH and CDC.